387890097 has 8 divisors (see below), whose sum is σ = 591070656. Its totient is φ = 221651472.

The previous prime is 387890089. The next prime is 387890137. The reversal of 387890097 is 790098783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 387890097 - 2³ = 387890089 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (387890077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9235458 + ... + 9235499.

It is an arithmetic number, because the mean of its divisors is an integer number (73883832).

Almost surely, 2^387890097 is an apocalyptic number.

It is an amenable number.

387890097 is a deficient number, since it is larger than the sum of its proper divisors (203180559).

387890097 is a wasteful number, since it uses less digits than its factorization.

387890097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18470967.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 387890097 is about 19694.9256662725. The cubic root of 387890097 is about 729.2944311686.

The spelling of 387890097 in words is "three hundred eighty-seven million, eight hundred ninety thousand, ninety-seven".